LHC Computing
Grid Project
Project Execution Board
Notes
of the meeting of Tuesday March 16, 2004
DRAFT 5 22/MAR/2004
Present:
Dario Barberis,
Actions: Actions are identified by bold blue italics.
The minutes of the meeting of the 2nd March were accepted.
Mirco summarized the main points of the GDB meeting
of March 8. (document).
There were many reactions from the experiments on
the security document "LCG User Registration
and VO Management". The experiments want to have a centralized system
for the LHC experiments as much as possible connected to the CERN registration (“Human
Resources”) database which contains already the affiliation of people to
experiments. The registration and the VO attribution should be handled in one
place as outlined in Appendix A of the document.
A questionnaire concerning requirements for IP connectivity to the worker nodes has been sent out – replies from some experiments are still outstanding. Ian would like to have the complete picture with the requirements of the experiments on one side and the constraints of the computing centres on the other.
With the grid deployment in EGEE, a policy body like the GDB will be required – maybe an extended common GDB. Les, Ian, Mirco and Dave Kelsey will discuss with the EGEE management.
Concerning the LCG-2 deployment,
a mismatch in the queuing systems at some centres has been experienced. For the
The summary of the POB meeting of 17-18 February is summarized in a document. Concerning point 4 of the document, it is decided that the LCG quarterly reports should from now on contain the regular summary reports of the plans of experiments for integrating Applications Area products in their applications.
Jürgen has
updated the milestone
table taking into account the input from PEB members. This final table was
approved by the PEB to be sent to the LHCC referees. The referees will be
informed that more concrete milestones for the Applications Area will be
supplied as soon as the plan is ready.
Bob
announced that at the recent NA4 meeting, it was agreed that "The major deliverable will be the evaluation report, due Jan 2005, reporting
on the applications use of LCG/EGEE. This will have to be based largely on data
challenge work in 2004 with current middleware, and supplemented by first work
done with new EGEE middleware." Therefore the experiments should agree to make material (grid
usage results and feedback) on the use of the LCG-2 for their data challenges
in 2004 available to the NA4 people for inclusion in this deliverable.
Philippe reiterated
the LHCb concern about the heavy manpower
requirements to satisfy simultaneously the parallel routes of milestones 2 and
3.
Recently,
it became clear that the responsibilities for supporting Tier-2 centres were not clearly defined. Les has drafted a first document
collecting items to be addressed by a small group of four experts from Tier-2 an Tier-1 centres. The resulting document
should also be used as background information by the MoU
task-force because the required support will need to be properly funded.
Following
the discussion in the PEB and with further input by mail, Les will provide an updated version of his proposal and
contact people to join the task force.
Point raised include:
Ian said
that by now 1800 CPUs are running LCG-2 at the core
sites. Some batch queue configuration questions are being investigated.
Alberto said
that
On the question
when
Ian
mentioned that the large size of
Dario said
that ATLAS is now preparing for the data challenge starting beginning of May.
LHCb
wants to start testing very soon. They plan to provide next week a release of the
application software for the data challenges. On the question of Philippe concerning mass
storage space, Ian said that the plan is to move to the SRM interface to MSS by
the end of March – also at RAL.
Massimo has finished a first round of
discussions with the experiments on Arda. He
appreciated their constructive attitude. He expects to present a plan next
week. An agreement has been reached on
how people are assigned to experiments. The office space for the project is still
to be solved.
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Actions |
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# |
Date opened |
Description |
Responsible |
Date closed |
|
1 |
16dec03 |
ALICE, CMS and LHCb to name someone
responsible for coordinating deployment on LCG-2 |
Federico, David S., Philippe |
Done |
|
2 |
16dec03 |
Understand why the substantial resources
in 6jan04- visit to RAL organised for 24jan04 |
Les |
Done |
|
3 |
16dec03 |
Confirm that the absence of BNL in the
LCG-2 deployment list is due to manpower shortage |
Les |
Done |
|
4 |
16dec03 |
Experiments to request through their
national contacts that their resources in the core LCG-2 centres are
integrated in LCG-2 |
Federico, Dario, David S., Philippe |
Done |
|
5 |
16dec03 |
Regional centres to be asked to clarify
their mass storage plans. Presented by RCs
in GDB of 13jan04 |
Les |
13jan04 |
|
6 |
12jan04 |
Revised proposed GAG mandate |
Federico |
27jan0 |
|
7 |
27jan04 |
Revised ARDA note |
Les |
12feb04 |
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8 |
27jan04 |
Establish a weekly “Deployment
Meeting” |
Ian |
2feb04 |
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9 |
27jan04 |
Note on new project proposal from |
Federico |
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10 |
12feb04 |
Define new name for middleware |
Bob |
|
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11 |
12feb04 |
Nominate Arda
contact persons |
|
|
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12 |
12feb04 |
Nominate people for Phase 2 requirements
of the experiments |
Experiments |
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